newbie - How do I lubricate the slide out?

Not recommended. Just keep them clean.

I use that product with good results...I also use a tooth brush to clean the exposed gears, with has also worked good for me.

Also use Acme Slide Seal Powder (aka baby powder). Sprinkle on a sock and wipe on the big seal rubbers to reduce stickage.

shoot someof that lube on a test patch like a piece of scrap something.

See if it dries to a non greasy surface that will not azttract dirt.

Sounds to me you are dealing with something like slip plate.

Does it not have a how to on the container?

i am going to try on a test patch first. was going to try the old sock, but sprayed lube on some old underwear and the wife now thinks i have retro trouble. yes the container says how to apply BUT NOT Where on the slide... to i put it in the toothed gear part, the edges the middle that looks to be in contact with something else etc. i frequent areas that are dirt roads and i don't want grime up there, but on the other hand don't want the slide to stick!

I use Slip Plate brand graphite spray. Goes on like dry paint.
I spray the exposed rack's gear teeth only.

I use a spray made for slideouts,.....kind of a dry grease, and probably more expensive than other stuff, but never a problem, and the tall can last a long time
Mine is hydraulic, and whenever the slide starts coming in a little uneven, a spray fixes it.
.

I use the same stuff on my slides. No problem with dirt. I spray the entire track. Excess spray will drip off, no problem. Do it twice a year.

At the same time I use the slide-out rubber sealer conditioner. Keep the rubbers nice and soft.

Surprised nobody asked what kind of slide-out mechanism he has. They're different you know.

No slide on my rig but for dry as dust high pressure lube I use a product called DRY SLIDE. The downside is the powder can stain black. The upside it it lasts a thousand times longer than baby powder and has lubricity like crazy. It positively will not attract dust or dirt.